The crossword solution for the term BALLPARK NOSH is FRANK, which is a five-letter word. FRANK is a shortened form of the word 'FRANKFURTER, ' which is a type of sausage that is often served at baseball stadiums and other outdoor venues. It is usually served in a bun with condiments such as ketchup, mustard, or relish. The term 'ballpark nosh' is used to refer to the food that is typically served at ballparks, which often includes hot dogs, popcorn, peanuts, and other snacks.